Take a look at this Butterfly cell phone Concept designed by Andrew Kim, a 15 year old kid that can design concepts that would put the pros to shame. Honestly this is one of the best phone concepts I've seen, the sketches are great, the renderings are great, and the graphic layout is clean.

"Butterfly is a horizontal slider with dual AMOLED touch-screens, which opens biased to an angle so as to give the familiar Nokia Communicator-style format. The lower screen then acts as a keypad for dialing and messaging, while you've got a broad top screen for web-browsing."